I’ve Got the USB Power
But how much in milliamps?
Materials
Extra info / Update
Gerber file
CAM/CAD data for the PCB referred to in this article is available as a Gerber file. Elektor Green and Gold members can exclusively download these files for free as part of their membership. Gerber files allow a PCB to be produced on an appropriate device available locally, or through an online PCB manufacturing service.
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Bill of Materials
R1 = 0.05Ohm 1W 1%, Welwyn OAR1-R050FI (Farnell # 1200363)
R2 = 18kOhm (SMD 0805)
R3 = 2.00kOhm (SMD 0805)
Capacitors
C1 = 100nF X7R (SMD 0805)
Semiconductors
IC1 = TSC101A, TSOP-5 case
Miscellaneous
K1 = USB-A male connector (plug), PCB mount, through hole
K2 = USB-A female connector (socket), PCB mount, through hole
MOD1 = Voltcraft 70004 LCD panel meter module; Conrad-Uk.com # 121065-89
PCB # 110568-1

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